Gullwing, the Mercedes-Benz SLS AMG is undergoing some up-gradation at the Hamann Motorsport tuning company premises. They have already added a ” 21-inch cross-spoke “Design Edition Race” with alloy wheels having a black matt anodized finish with titanium wheel bolts. The front wheels are wrapped in 245/30 ZR21 tires with it being 295/25 ZR21 tires